Question

find the circumference of circle whose diameter is 7m

Answer 1

d=2r
7/2=r
3.5m=r

C=2πr
C=2×22/7×3.5
C=22m

Answer 2

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Diameter = 7 m
Radius = 7/2 m

As we know the formula

The Circumference of the circle is = 2πr
$= 2 \times \frac{22}{7} \times \frac{7}{2} \\ = 22 \: m$

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